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油用牡丹根结线虫拮抗菌株的筛选和鉴定

Journal of Shandong Forestry Science and Technology(2019)

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Abstract
油用牡丹是一类重要的木本粮油树种.随着种植面积的扩大,根结线虫病发生日益严重.为了安全有效的防治油用牡丹根结线虫病,本文从土壤中分离获得了1株对油用牡丹根结线虫具有拮抗效果的菌株HZ087,经形态特征观察、生理生化特性测定以及16S rDNA序列分析,鉴定该菌株为解淀粉芽孢杆菌Bacillus amyloliquefaciens.利用该菌株发酵液5倍、10倍稀释液处理油用牡丹根结线虫2龄幼虫,48h后校正死亡率分别为91.36%、83.53%;利用发酵液2倍、5倍稀释液处理油用牡丹根结线虫卵,10d后孵化率为45.98%、49.27%,可以有效抑制油用牡丹根结线虫卵的孵化.
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